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Finding the Fourth Proportional to 7,791.38, 10,744.80 and 5,134.16

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Solution

The fourth proportional to 7,791.38, 10,744.80 and 5,134.16 is: 7,080.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.38 : 10,744.80 = 5,134.16 : x
  2. Step 2: Convert to fraction form
    7,791.38/10,744.80 = 5,134.16/x
  3. Step 3: Cross multiply
    7,791.38x = 10,744.80 × 5,134.16
  4. Step 4: Simplify right side
    7,791.38x = 55,165,522.37
  5. Step 5: Solve for x
    x = 55,165,522.37/7,791.38
  6. Step 6: Final answer
    x = 7,080.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.